Bloch remarks that the blush is sexual, because reddening of the face, as well as of the genitals, is an accompaniment of sexual emotion (_Beiträge zur Ætiologie der Psychopathia Sexualis_, Teil II, p. 39). "Do you not think," a correspondent writes, "that the sexual blush, at least, really represents a vaso-relaxor effect quite the same as erection? The embarrassment which arises is due to a perception of this fact under circumstances which are felt to be unsuited for such a condition. There may arise the fear of awakening disgust by the exhibition of a state which is out of place. I have noticed that such a blush is produced when a sufficiently young and susceptible woman is pumped full of compliments. This blush seems accompanied by pleasure which does not always change to fear or disgust, but is felt to be attractive. When discomfort arises, most women say that they feel this because 'it looks as if they had no control over themselves.' When they feel that there is no need for control, they no longer feel fear, and the relaxor effect has a wider field of operation, producing a general rosiness, erection of spinal sexual organs, etc. Such a blush would thus be a partial sexual equivalent, and allow of the inhibition of other sexual effects, through the warning it gives, and the fear aroused, as well as being in itself a slight outlet of relaxor energy. When the relationships of the persons concerned allow freedom to the special sexual stimuli, as in marriage, blushing does not occur so often, and when it does it has not so often the consequent of fear." There can be no doubt that the blush is sexually attractive. The blush is the expression of an impulse to concealment and flight, which tends automatically to arouse in the beholder the corresponding impulse of pursuit, so that the central situation of courtship is at once presented. Women are more or less conscious of this, as well as men, and this recognition is an added source of embarrassment when it cannot become a source of pleasure. The ancient use of rouge testifies to the beauty of the blush, and Darwin stated that, in Turkish slave-markets, the girls who readily blushed fetched the highest prices. To evoke a blush, even by producing embarrassment, is very commonly a cause of masculine gratification.